+ memcg-manually-inline-__refill_stock.patch added to mm-new branch

+ memcg-manually-inline-__refill_stock.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: memcg: manually inline __refill_stock
has been added to the -mm mm-new branch.  Its filename is
     memcg-manually-inline-__refill_stock.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/memcg-manually-inline-__refill_stock.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Shakeel Butt <shakeel.butt@linux.dev>
Subject: memcg: manually inline __refill_stock
Date: Thu, 3 Apr 2025 18:39:08 -0700

There are no more multiple callers of __refill_stock(), so simply inline
it to refill_stock().

Link: https://lkml.kernel.org/r/20250404013913.1663035-5-shakeel.butt@linux.dev
Signed-off-by: Shakeel Butt <shakeel.butt@linux.dev>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Muchun Song <muchun.song@linux.dev>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/memcontrol.c |   34 +++++++++++++---------------------
 1 file changed, 13 insertions(+), 21 deletions(-)

--- a/mm/memcontrol.c~memcg-manually-inline-__refill_stock
+++ a/mm/memcontrol.c
@@ -1871,14 +1871,22 @@ static void drain_local_stock(struct wor
 	obj_cgroup_put(old);
 }
 
-/*
- * Cache charges(val) to local per_cpu area.
- * This will be consumed by consume_stock() function, later.
- */
-static void __refill_stock(struct mem_cgroup *memcg, unsigned int nr_pages)
+static void refill_stock(struct mem_cgroup *memcg, unsigned int nr_pages)
 {
 	struct memcg_stock_pcp *stock;
 	unsigned int stock_pages;
+	unsigned long flags;
+
+	VM_WARN_ON_ONCE(mem_cgroup_is_root(memcg));
+
+	if (!local_trylock_irqsave(&memcg_stock.stock_lock, flags)) {
+		/*
+		 * In case of unlikely failure to lock percpu stock_lock
+		 * uncharge memcg directly.
+		 */
+		memcg_uncharge(memcg, nr_pages);
+		return;
+	}
 
 	stock = this_cpu_ptr(&memcg_stock);
 	if (READ_ONCE(stock->cached) != memcg) { /* reset if necessary */
@@ -1891,23 +1899,7 @@ static void __refill_stock(struct mem_cg
 
 	if (stock_pages > MEMCG_CHARGE_BATCH)
 		drain_stock(stock);
-}
 
-static void refill_stock(struct mem_cgroup *memcg, unsigned int nr_pages)
-{
-	unsigned long flags;
-
-	VM_WARN_ON_ONCE(mem_cgroup_is_root(memcg));
-
-	if (!local_trylock_irqsave(&memcg_stock.stock_lock, flags)) {
-		/*
-		 * In case of unlikely failure to lock percpu stock_lock
-		 * uncharge memcg directly.
-		 */
-		memcg_uncharge(memcg, nr_pages);
-		return;
-	}
-	__refill_stock(memcg, nr_pages);
 	local_unlock_irqrestore(&memcg_stock.stock_lock, flags);
 }
 
_

Patches currently in -mm which might be from shakeel.butt@linux.dev are

memcg-vmalloc-simplify-memcg_vmalloc-updates.patch
memcg-vmalloc-simplify-memcg_vmalloc-updates-fix.patch
memcg-remove-root-memcg-check-from-refill_stock.patch
memcg-decouple-drain_obj_stock-from-local-stock.patch
memcg-introduce-memcg_uncharge.patch
memcg-manually-inline-__refill_stock.patch
memcg-no-refilling-stock-from-obj_cgroup_release.patch
memcg-do-obj_cgroup_put-inside-drain_obj_stock.patch
memcg-use-__mod_memcg_state-in-drain_obj_stock.patch
memcg-manually-inline-replace_stock_objcg.patch